Building material.



J. SCHIRRA. BUILDING MATERIAL. APPLICATION FILLED APR. 27, 1908.

926,773. Patented July 6, 1909.

UNITED sTA'rps PATENT OFFICE.

JULIUS SCHIRRA, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR OF SEVEN-SIXTEENTHSTO PETER WEINKAUF AND ONE-SIXTEENTH TO CHARLES H. MASON, OF PITTSBURG,PENN SYLVANIA.

BUILDING m'rnnmn.

Patented. July 6, 1909.

Application filed April 27, 1908. Serial No. 429,521.

To. all whom it may concern:

Beit known that I, JULIUs Sonmna, a citizen of' the United States,residing at Pittsburg, inthe county of Allegheny and State ofPennsylvania, have invented certain new and usefull mprovements inBuilding Material, of which thefollowing-isa specification, referencebeing had therein to the accompanying drawing.

My invention refers to improvements in building construction and relatesparticularly to means for insertion between portions of a wall or uponthe surface thereof for preventing passage or circulation of moisture.

The invention consists in layers of suitable material as hereinafterdescribed, arranged for connection or interlocking engagement to make acontinuous construction, and having qualities of flexibility,impenetrability of moisture and bondingefliciency for engagement withmortar, plaster, etc.

Ordinarily in laying the courses of brick on the foundation walls,masons employ layers of slate for the purpose of preventing the passageof moisture, but as is well known the slate is easily cracked, due tothe hard opposing surfaces and pressure, thereby largely destroying itsusefulness for the purpose intended.

In the drawings illustrating the invention Figure 1 is a view inelevation of a portion of a stone or brick wall provided with myinvention. Fig. 2 is a vertical sectional view indicated by the line II.II. of Fig. 1. Fig. 3 is a detail view in erspective of one of'thesections of materia Fig. 4 is an enlarged sectional detail viewillustrating the construction at the joined end. Fig. 5 is a perspectivedetail view showing a modified construction. Fig. 6 is a similar viewillustrating the female edge of one of said sections. Fig. 7 is asectional view enlarged indicated by the line VII. VII. of Fig. 5.

In carrying out my invention I provide sections or layers 2 composed ofpaper or similar material of sufficient thickness, flexibility, andtoughness to give a good body of the necessary strength, both edges ofwhich at opposite sides are corrugated as indicated at 3, while theintervening edges at right angles to said edges are pressed bysuitabledies so as to reduce the normabthickness of the aper to about one-half,as indicated at 4, 4, It will be observed that the depressions re- 55sulting from such operation are located at opposite portions of the fiatsurfaces whereby to interfit with the-next adjacent s'ection,,as f'ullyindicated in Fig. 1 toprovide a flush continuation of both faces whensaid sections are incorporated'together in a wall, although thedepressions may be on the same side and the layers laid alternately. Thecorrugated edges 3 are designed to project to within a short distanceofthe faces of the wall at one or both sides and to provide a bondingattachment for -the mortar which is filled into the crevices, saidcorrugations being conveniently made by crimping the edges betweensuitable rolls or other device. When thus prepared the sections 2' areentirely covered on both sides and over-their entire outer portions witha suitable surfacing material for the purpose of providing an attachingor cementin covering for an outer coating of sand. have secured goodresults with a mixture of Keenes cement and paint of any suitable kind,which mixture will form a soft putty-like substance which will closelyadhere to the paper and will have great retaining capacity as a cement.Such substance is indicated at 5 in Fig. 4. Over the dpaper as thusrepared I then sprinkle san 0 white river sand, which becomes tightlyincor orated with the coating 5 and when the sai coating dries the sandwill be firmly incorporated with it and will provide a strong roughsurface with which the mortar will become closely bonded when applied.In using the material as thus prepared, continuous layers are laidbetween courses of stone and brick as indicated in Figs. 1 and 2 orbetween the adjacent brick courses or stone courses, being laid inmortar, and when the superimposed layer of mortar and the next course ofbrick is laid thereon, the entire any suitab e kind, preferablysharpstructure will be pressed closely together 7 and my improvedmaterial will thus be rigidly incorporated as a permanent portion of thewall.

In the modified construction shown in and a and-groove joint. Such formis particularly adapted as a Wall cover and it may be conveniently andefficiently used by tacking u on any surface, Wooden or otherwise, for te same general object, to Wit, for preventin the passa e of moisture andalso for proa goo for the mortar or other Wall-surfacing material.

By reason of its character, the sections mav be readily pierced by nailsor tacks and will be rigidly held in lace thereby on any surfacepermitting suc method of attachment.

A further use of the invention is with slate or other roofs, thesections being laid upon the boards of the roof in the same generalmanner asordinary paper is laid, providing a continuous intervening laer between the supportin structure and t e upper layer or layers of sate, etc. 1

Various other uses may be made of the invention inthe building arts asmay be sugested to the user, the advantages of flexibilit and resistanceits 0 cf merits.

The invention is very useful and econombonding surface for retention tomoisture constitutingseems ical, it may be made in various sizes" orproportions or changed in difierent details of construction or treatmentby the skilled me- I chanic, but all such changes are to be consideredas Within the scope of the following claims.

What I claim is:

1. Building material consisting of interfitting sections of flexiblepaper provided With a corrugated edge and transverse compressed ed esand having a covering of cementitious substances and an outer coating ofsand or the like, substantially as set forth.

2. As an improved article of manufacture, a layer of flexible paperhaving .a covering consisting of a mixture of cement and paint and anouter coating of sand impregnated therein, and rovided with flattenededge portions of re uced thickness, and intervenng corrugated edges,substantially as set orth.

in presence of tWo Witnesses.

C. M. CLARKE, CHAs. S. LEPLEY.

In testimony whereof I affix my signature

